#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
int main()
{
  
  pid_t id=fork();
  if(id<0)
  {
    perror("fork()");
  
  }
else if(id==0)
{
  while(1)
  {
printf("I am child pid:%d,ppid:%d\n",getpid(),getppid());
  sleep(3);
  break;
}
exit(0);
}
else{
while(1)
{


  printf("I am parent pid:%d,ppid:%d\n",getpid(),getppid());

  sleep(1);

}
}
printf("you can see me!\n");


return 0;
}
